A piece of paper was used to judge an offside call in the VAR control room during a China League One game between Shanghai Shenxin and Heilongjiang.
Visitors Heilongjiang were 1-0 up when the incident occurred 57 minutes into Saturday’s match at the Jinshan Sports Centre.
They thought they had doubled their advantage when Ziming Wang’s header was saved and Kaiyu Mao tapped in the rebound.
However a linesman raised his flag, adjudging the goal-scorer to have been slightly offside when the ball was headed.
The matter was referred to the video assistant referee system, with one of the arbitrators using a piece of paper as a prop to help him decide.
Eventually a decision is reached to rule out the goal, with the incident proving to be a turning point as Shanghai Shenxin bounced back to win 2-1.